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#include <Xw_Extension.h>
/* ifdef then trace on */
#ifdef TRACE
#define TRACE_DEF_TILEMAP
#endif
/*
XW_EXT_TILEMAP* Xw_def_tilemap(adisplay,ntile):
XW_EXT_DISPLAY *adisplay Extended Display structure
int ntile Number of tile cells to be allocated
Create a tilemap extension
allocate the tile cells in the tilemap as if possible
depending of the MAXTILE define .
Returns Tilemap extension address if successuful
or NULL if ERROR
*/
#ifdef XW_PROTOTYPE
void* Xw_def_tilemap (void* adisplay,int ntile)
#else
void* Xw_def_tilemap (adisplay,ntile)
void *adisplay ;
int ntile ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_DISPLAY *pdisplay = (XW_EXT_DISPLAY*)adisplay ;
XW_EXT_TILEMAP *ptilemap = NULL ;
//int i,tile ;
int i ;
if( !Xw_isdefine_display(pdisplay) ) {
/*ERROR*Bad EXT_DISPLAY Address*/
Xw_set_error(96,"Xw_def_tilemap",pdisplay) ;
return (NULL) ;
}
if( !(ptilemap = Xw_add_tilemap_structure(sizeof(XW_EXT_TILEMAP))) )
return (NULL) ;
if( ntile <= 0 ) ntile = MAXTILE ;
ptilemap->connexion = pdisplay ;
ptilemap->maxtile = min(ntile,MAXTILE) ;
for( i=0 ; i<ptilemap->maxtile ; i++ ) {
ptilemap->tiles[i] = 0 ;
}
#ifdef TRACE_DEF_TILEMAP
if( Xw_get_trace() ) {
printf(" %lx = Xw_def_tilemap(%lx,%d)\n", (long ) ptilemap,(long ) adisplay,ntile) ;
}
#endif
return (ptilemap);
}
static XW_EXT_TILEMAP *PtilemapList =NULL ;
#ifdef XW_PROTOTYPE
XW_EXT_TILEMAP* Xw_add_tilemap_structure(int size)
#else
XW_EXT_TILEMAP* Xw_add_tilemap_structure(size)
int size ;
#endif /*XW_PROTOTYPE*/
/*
Create and Insert one Extended tilemap structure in the
EXtended tilemap List
returns Extended tilemap address if successful
or NULL if Bad Allocation
*/
{
XW_EXT_TILEMAP *ptilemap = (XW_EXT_TILEMAP*) Xw_malloc(size) ;
int i ;
if( ptilemap ) {
ptilemap->type = TILEMAP_TYPE ;
ptilemap->link = PtilemapList ;
PtilemapList = ptilemap ;
ptilemap->connexion = NULL ;
ptilemap->maxtile = 0 ;
ptilemap->maxwindow = 0 ;
for( i=0 ; i<MAXTILE ; i++ ) {
ptilemap->tiles[i] = 0 ;
}
} else {
/*EXT_TILEMAP allocation failed*/
Xw_set_error(17,"Xw_add_tilemap_structure",0) ;
}
return (ptilemap) ;
}
#ifdef XW_PROTOTYPE
XW_STATUS Xw_close_tilemap(void* atilemap)
#else
XW_STATUS Xw_close_tilemap(atilemap)
void* atilemap ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_TILEMAP *ptilemap = (XW_EXT_TILEMAP*)atilemap ;
XW_STATUS status ;
if( !Xw_isdefine_tilemap(ptilemap) ) {
/*Bad EXT_TILEMAP Address*/
Xw_set_error(49,"Xw_close_tilemap",ptilemap) ;
return (XW_ERROR) ;
}
status = Xw_del_tilemap_structure(ptilemap) ;
#ifdef TRACE_DEF_TILEMAP
if( Xw_get_trace() ) {
printf(" %d = Xw_close_tilemap(%lx)\n",status,(long ) ptilemap) ;
}
#endif
return (status) ;
}
#ifdef XW_PROTOTYPE
XW_STATUS Xw_del_tilemap_structure(XW_EXT_TILEMAP* atilemap)
#else
XW_STATUS Xw_del_tilemap_structure(atilemap)
XW_EXT_TILEMAP *atilemap;
#endif /*XW_PROTOTYPE*/
/*
Remove the Extended tilemap address from the Extended List
returns ERROR if the tilemap address is not Found in the list
returns SUCCESS if successful
*/
{
XW_EXT_TILEMAP *ptilemap = PtilemapList ;
int i ;
if( !atilemap ) return (XW_ERROR) ;
if( atilemap->maxwindow ) --atilemap->maxwindow ;
if( atilemap->maxwindow ) {
return (XW_ERROR) ;
} else {
for( i=0 ; i<MAXTILE ; i++) {
if( atilemap->tiles[i] ) XFreePixmap(_PDISPLAY,atilemap->tiles[i]) ;
}
if( atilemap == ptilemap ) {
PtilemapList = (XW_EXT_TILEMAP*) atilemap->link ;
} else {
for( ; ptilemap ; ptilemap = (XW_EXT_TILEMAP*) ptilemap->link ) {
if( ptilemap->link == atilemap ) {
ptilemap->link = atilemap->link ;
break ;
}
}
}
Xw_free(atilemap) ;
}
return (XW_SUCCESS) ;
}
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